KR101972491B1 - Stereoscopic image display and method for manufacturing of the same - Google Patents

Abstract

The present invention relates to a display panel, A pattern reliader film attached to a color filter substrate of a display panel; A black stripe formed in the display region of the color filter substrate of the display panel; And an alignment mark formed on a non-display region of the color filter substrate of the display panel and having a plurality of alignment marks, wherein the plurality of alignment marks have a region overlapping at least one remaining portion, A display device is provided.

Description

TECHNICAL FIELD [0001] The present invention relates to a stereoscopic image display device and a stereoscopic image display device,

An embodiment of the present invention relates to a stereoscopic image display device and a method of manufacturing the same.

The stereoscopic image display device is divided into a stereoscopic technique and an autostereoscopic technique. The binocular parallax method uses the parallax images of the left and right eyes with large stereoscopic effects. In the binocular parallax system, there are a glasses system and a non-glasses system, and both systems are now practically used.

The spectacle method realizes a stereoscopic image by using polarizing glasses or liquid crystal shutter glasses to display the right and left parallax images in a direct view type display device or a projector by changing the polarization directions of the parallax images in a time division manner. In the non-eyeglass system, an optical plate such as a parallax barrier for separating the optical axis of the left and right parallax images is generally implemented in a manner of being installed in front of or behind the display screen.

On the other hand, some of the stereoscopic image display devices use a film-type patterned retarder having a different polarization state for each line. In order to attach the patterned retarder film to the display panel, an alignment key must be present.

The alignment marks are used to determine how precisely the patterned retarder film and display panel are aligned, or to what extent they are distorted, and to correct the position between them.

The alignment mark is generally formed by a photolithographic method. This is because if the photolithography method is used, an alignment mark of fine line width can be formed. However, in the case of forming an alignment mark by a printing method, there is a limit in the line width that can be realized in comparison with the photolithography method.

However, according to the structure of the patterned retarder film constituting the stereoscopic image display device, the alignment mark should be formed not only by the photolithography method but also by the printing method. Research should be conducted to show equal test ability and equivalent level.

The present invention for solving the problems of the background art described above can display the same inspection ability value and the same level as the photolithography method, and it is possible to provide a process convenience and, at the same time, And to provide a stereoscopic image display device including the inks and a method of manufacturing the same.

According to an aspect of the present invention, A pattern reliader film attached to a color filter substrate of a display panel; A black stripe formed in the display region of the color filter substrate of the display panel; And an alignment mark formed on a non-display region of the color filter substrate of the display panel and having a plurality of alignment marks, wherein the plurality of alignment marks have a region overlapping at least one remaining portion, A display device is provided.

In another aspect, the present invention provides a display panel comprising: a display panel; A pattern reliader film attached to a color filter substrate of a display panel; A black stripe formed in the display region of the color filter substrate of the display panel; And a plurality of alignment marks formed on a non-display area of the color filter substrate of the display panel and having a plurality of alignment marks, wherein the plurality of alignment marks are arranged on the same vertical line as the first alignment mark, A third alignment mark positioned on one side of the first alignment mark, and a fourth alignment mark positioned on the other side of the second alignment mark, wherein the third and fourth alignment marks And the mark has a region that is in contact with the spacing space between the first alignment mark and the second alignment mark to form a virtual center line.

The plurality of alignment marks may be sequentially arranged in the first direction so that the same regions have the overlapped shape.

The plurality of alignment marks may include a central alignment mark positioned at the center and a peripheral alignment mark having an area partially overlapping the central alignment mark.

The peripheral alignment mark includes a first alignment mark, a second alignment mark spaced apart on the same horizontal line as the first alignment mark, a third alignment mark spaced apart on the same vertical line as the second alignment mark, And a fourth alignment mark positioned on the same horizontal line as the third alignment mark and spaced apart on the same vertical line as the first alignment mark.

The alignment mark may be formed of one of a circle, a rectangle and a polygon, or a combination thereof.

Aligned keys can differ by at least one of color, brightness, and saturation.

According to another aspect of the present invention, there is provided a method of manufacturing a display panel, including: forming a display panel by laminating a transistor substrate and a color filter substrate; Forming a pattern reliader film attached to the display panel; Forming a black stripe on a display area of the color filter substrate of the display panel and forming an alignment mark on a non-display area of the color filter substrate of the display panel; Attaching a pattern reliader film to the display panel; And inspecting an alignment state between the display panel and the pattern reliader film using an alignment mark, wherein the black stripe and the alignment mark are formed by a printing method. do.

The alignment mark may be formed of one of a circle, a rectangle and a polygon, or a combination thereof.

Aligned keys can differ by at least one of color, brightness, and saturation.

The present invention has the effect of providing a stereoscopic image display device and a method of manufacturing the same that can increase luminance with an increase in aperture ratio. In addition, the present invention can form a black stripe and an alignment mark on the outside of a color filter substrate constituting a display panel by a printing method to exhibit the same inspection capability and the same level as a photolithography method, There is provided an effect of providing a stereoscopic image display device and a method of manufacturing the stereoscopic image display device capable of easily determining an alignment state as well as an alignment state.

1 is a schematic view of a stereoscopic image display apparatus according to an embodiment of the present invention;
Fig. 2 is a schematic view of the display panel and the patterned retarder film shown in Fig. 1; Fig.
3 is a first exemplary view showing a cross section of the display panel and the patterned relief film shown in Fig.
4 is a second exemplary view showing a cross section of the display panel and the patterned relief film shown in Fig.
5 is a view for explaining the advantages of the structure shown in Figs. 3 and 4. Fig.
6 is a view showing an alignment mark for aligning between a display panel and a pattern reliader film;
Figures 7 and 8 are first illustrations of an alignment key.
Figures 9 and 10 are second examples of an alignment key.
11 and 12 are third views of the alignment key.
13 is a view showing a configuration that can be configured with an alignment key.
14 to 17 are views for explaining a method of manufacturing a stereoscopic image display device according to the present invention.
18 to 20 are diagrams for explaining the alignment state inspection.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic structural view of a stereoscopic image display apparatus according to an embodiment of the present invention, and FIG. 2 is a schematic view of a display panel and a pattern reliader film shown in FIG.

1 and 2, a stereoscopic image display device according to an exemplary embodiment of the present invention includes an image supply unit SBD, a timing control unit TCN, a driving unit DRV, a display panel LCD, Film (FPR) and polarizing glasses (GLS).

The image supply unit (SBD) generates 2D image frame data in a two-dimensional mode (2D mode) and 3D image frame data in a three-dimensional mode (3D mode). The image supply unit SBD supplies the timing control unit TCN with timing signals and video frame data such as a vertical synchronization signal Vsync, a horizontal synchronization signal Hsync, a data enable signal DE and a main clock do. The image supply unit SBD is selected in the 2D or 3D mode according to the user's selection input through the user interface, generates image frame data corresponding thereto, and supplies the image frame data to the timing control unit TCN. The user interface includes user input means such as an OSD (On Screen Display), a remote controller, a keyboard, and a mouse.

The timing control unit TCN receives 3D image frame data including left eye image frame data and right eye image frame data from the image supply unit SBD. The timing controller TCN alternately supplies the left eye image frame data and the right eye image frame data to the driver DRV at a frame frequency of 120 Hz or more. In addition, the timing control unit TCN supplies a control signal corresponding to the image frame data to the driving unit DRV.

The driving unit DRV includes a data driver connected to the data lines and supplying a data signal, and a scan driver connected to the scan lines to supply a scan signal. The driving unit DRV converts the digital left-eye and right-eye image frame data into analog left-eye and right-eye image frame data under the control of the timing control unit TCN and supplies them to the data lines. In addition, the driving unit DRV sequentially supplies the scan signals to the scan lines under the control of the timing control unit TCN.

The display panel (LCD) receives a scan signal and a data signal from the driver DRV and displays a 2D image or a 3D image corresponding thereto. The display panel (LCD) may be composed of an organic light emitting element, an electrophoretic element, a plasma light emitting element, and a liquid crystal element, but is not limited thereto. The above-described elements are formed between the transistor substrate and the color filter substrate, and are different from the structure formed on the transistor substrate and the structure formed on the color filter substrate for each device characteristic. Therefore, in the present invention, for convenience of explanation, a liquid crystal display panel composed of a liquid crystal element is an example. A lower polarizing plate (LPOL) is attached to a lower part of a display panel (LCD) composed of a liquid crystal display panel, and an upper polarizing plate (UPOL) is attached to an upper part. A display panel (LCD) composed of a liquid crystal display panel displays a 2D image in the 2D mode and a 3D image in the 3D mode by the light provided from the backlight unit.

The patterned retarder film (FPR) is attached to the color filter substrate (display surface) of the display panel (LCD). The patterned retarder film (FPR) displays the left eye image and the right eye image displayed on the display panel (LCD) in a line-by-line manner and interlaced. To this end, the patterned retarder film (FPR) includes an adhesive layer 147, and a retarder layer 145 and a protective film 140. The retarder layer 145 includes a first retarder pattern layer 145R and a second retarder pattern layer 145L. The first and second retarder pattern layers 145R and 145L may cause the right circularly polarized light R and the left circularly polarized light L, respectively, but are not limited thereto. The first and second retarder pattern layers 145R and 145L are divided into scan lines of the subpixels SP of the display panel LCD. The patterned retarder film FPR is formed by using the first and second retarder pattern layers 145R and 145L so that odd lines are divided into right circularly polarized light R and even lines are divided into left circularly polarized light L And separates the image displayed on the display panel (LCD) into a left eye image and a right eye image.

Polarized glasses (GLS) transmit the left eye image and the right eye image, which are emitted through the patterned retarder film (FPR), separately. To this end, the left eyeglass (LEFT) of the polarizing glasses (GLS) includes a polarizing film that transmits the left eye image, and the right eyeglasses (RIGHT) of the polarizing glasses (GLS) includes a polarizing film that transmits the right eye image.

Hereinafter, the display panel and the pattern reliader film will be described in more detail.

FIG. 3 is a first exemplary view showing a cross section of the display panel and the pattern reliader film shown in FIG. 1, FIG. 4 is a second exemplary view showing a cross section of the display panel and the pattern reliader film shown in FIG. 1 And FIG. 5 is a view for explaining the advantages of the structure shown in FIG. 3 and FIG.

3 and 4, the display unit of the stereoscopic image display includes a pattern relief film (FPR) attached to a color filter substrate of a display panel (LCD) and a display panel (LCD) ).

The display panel (LCD) includes a transistor array substrate 110, a lower polarizer (LPOL) liquid crystal layer 115, a color filter layer 125, a color filter substrate 120, and an upper polarizer UPOL. Sub-pixels SP11 to SP31 defined by data lines, scan lines, thin film transistors, and storage capacitors (not shown) are formed in the transistor array substrate 110. [ A color filter layer 125 for converting light emitted from the sub-pixels SP11 to SP31 into red, green and blue (RGB) is formed on one surface (inner surface) of the color filter substrate 120, A black stripe 130 is formed on the other surface (outer surface)

The pattern relief film (FPR) includes an adhesive layer 147, a retarder layer 145, and a protective film 140. The adhesive layer 147 is a layer for adhesion between the display panel (LCD) and the color filter substrate 120. The retarder layer 145 is divided into a first retarder pattern layer 145R causing the right circularly polarized light R and a second retarder pattern layer 145L generating the left circularly polarized light L by the polarized light separator BL .

3, the three-dimensional image display apparatus according to the present invention includes a black matrix 121 formed on one side of a color filter substrate 120 and a black stripe 130 formed on the other side of the color filter substrate 120 . Here, the black matrix 121 defines upper and lower opening regions between the subpixels SP11 to SP31, and serves to prevent color mixture or the like between them.

4, the black matrix 121 formed on one surface of the color filter substrate 120 is removed and only the black stripe 130 formed on the other surface of the color filter substrate 120 is removed As shown in FIG. However, Figs. 3 and 4 are only examples of structures to which the present invention can be applied, and are not limited thereto.

5, (a) shows a conventional structure, (b) shows a structure of FIG. 3, and FIG. 3 (c) shows a view for explaining an advantage according to the structure of FIG.

5A, only the black matrix 121 exists and the black stripe 130 does not exist. Therefore, the width of the black matrix 121 must be widened to increase the viewing angle to 13 degrees (upper and lower viewing angles 26 degrees ).

3, since the black stripes 130 are present on one side of the color filter substrate 120 together with the black matrix 121, the viewing angle is changed to 13 degrees (upper and lower viewing angles 26 degrees) The width of the black matrix 121 can be narrowed compared to the conventional structure. In this structure, the width of the black matrix 121 can be reduced compared to the conventional structure, and the brightness can be increased with the increase of the aperture ratio compared to the conventional structure.

4, since the black stripes 130 are formed on the other surface of the color filter substrate 120, the black matrix 121 is formed even when the viewing angle is 13 degrees (up and down viewing angle of 26 degrees) Can be deleted. However, in the case of this structure, the width of the black stripe 130 should be widened compared to the structure of FIG. However, since the black stripe 130 is located outside the black matrix 121, the width of the black stripe 130 can be reduced compared to the conventional structure, and the structure of FIG. 4 can also increase the aperture ratio and the brightness compared to the conventional structure.

Hereinafter, an alignment key according to an embodiment of the present invention will be described.

6 is a view showing an alignment mark for aligning between the display panel and the pattern reliader film.

As shown in FIG. 6, an alignment mark AK is formed on the other surface of the color filter substrate 120 of the display panel (LCD). On the other surface of the color filter substrate 120, an upper polarizer is attached as described above. An antistatic layer is formed on the other surface of the color filter substrate 120 according to the structure. Accordingly, the other surface of the color filter substrate 120 on which the alignment mark AK is formed includes the surface immediately above the other surface of the color filter substrate 120, the surface immediately above the upper polarizer, or the surface immediately above the antistatic layer. As described above, the alignment marks AK can be formed in various positions according to the structure of the color filter substrate 120. In the following description, the alignment marks AK are positioned directly on the other side of the color filter substrate 120 for convenience.

The alignment mark AK is formed in the non-display area except for the display area AA of the color filter substrate 120. [ That is, not only the black stripes 130 of FIG. 5 but also the alignment marks AK are formed on the other surface of the color filter substrate 120. Since the alignment mark AK and the black stripe 130 are formed on the other surface of the color filter substrate 120, they can be formed by the same printing method (for example, inkjet printing, screen printing, etc.) .

The alignment mark (AK) and the black stripe (130) are made of the ink composition used in the printing method. The ink composition capable of forming the alignment mark AK and the black stripe 130 may exhibit various colors and may also include metal nanoparticles such as carbon nanotubes in some cases. When the metal nanoparticles are included in the ink composition as described above, the black stripes 130 can perform an antistatic function. The antistatic layer may be formed on the other side of the color filter substrate 120. However, the antistatic layer may be omitted when the black stripe 130 has an anti-static function. However, in some cases, only the alignment mark AK is formed by a printing method, and the black stripe 130 may be formed by another process such as a photolithography process.

Alleyne (AK) includes the Central Alignment Key (AKC), the Upper Alignment Key (AKU) and the Lower Align Key (AKL). The central alignment mark AKC is formed at the center of the other surface of the color filter substrate 120 and the upper alignment mark AKU and the lower alignment mark AKL are formed on the color filter substrate 120 on the basis of the central alignment mark AKC. And are formed at the top and bottom of the surface. However, the Alignment Key (AK) may be formed only by the Central Alignment Key (AKC) according to the shape. The central alignment key (AKC) is used to check the alignment between the display panel (LCD) and the patterned retarder film (FPR). The position " LCD_C " at which the central alignment mark AKC is formed corresponds to the position " FPR_C " at the center of the patterned retarder film FPR.

On the other hand, although not shown, the alignment mark AK is formed not only on the display panel (LCD) but also on the outskirts (regions corresponding to the non-display areas) of the pattern relief film FPR. The alignment mark formed on the outer surface of the patterned retarder film FPR may have the same shape as the alignment mark AK formed on the other surface of the color filter substrate 120 or may have a different shape.

The display panel (LCD) and the patterned retarder film (FPR) described above are attached through an attaching process. These alignment keys (AK) are used to align the display panel (LCD) to the alignment stage and to check the alignment between the display panel (LCD) and the pattern relief film (FPR). For this purpose, the alignment mark (AK) includes a plurality of alignment marks, and the alignment marks are formed in a superposition form and a non-overlapping form according to the structure.

Hereinafter, one example of the alignment mark AK located on the other surface of the color filter substrate 120 is shown at the center of the non-display area.

FIGS. 7 and 8 show a first example of an alignment key, FIGS. 9 and 10 are second exemplary views of the alignment key, FIGS. 11 and 12 are third example views of the alignment key, Is a diagram showing a configuration that can be configured with an alignment key.

As shown in FIGS. 6, 7 and 8, the alignment key is composed of first to m-th alignment marks AK1 to AKm having at least one overlapped portion with a remaining portion. The first to m-th alignment marks AK1 to AKm are sequentially arranged in the first direction so that the same regions have the overlapped shape.

The width of the horizontal / vertical portion occupied per alignment mark may be formed to be ± 70 μm to ± 90 μm, and the separation distance between the first to mth alignment marks AK1 to AKm may be ± 20 μm to ± 60 μm But is not limited thereto. For example, in the case where the width of the horizontal / vertical portion occupied per alignment mark is 80 占 퐉, it is preferable that the separation distance between the first to m-th alignment marks AK1 to AKm does not exceed 40 占 퐉.

In the drawing, an alignment mark composed of first to m-th alignment marks AK1 to AKm arranged at 5 o'clock, which is below the right oblique line, so that the same area has a shape gradually overlapping at regular intervals. However, the first to m-th alignment marks AK1 to AKm may be arranged in various directions such as 2 o'clock direction, 6 o'clock direction, 9 o'clock direction (variously arranged at 0 to 360 degrees in terms of angle). Here, the upper surface of the reference fourth alignment mark AK4 preferably corresponds to the center (LCD_C) of the color filter substrate 120.

When the alignment marks are formed by the first to m-th alignment marks (AK1 to AKm), when inspecting the alignment state (or adhesion degree) between the display panel (LCD) and the pattern relief film (FPR) It is possible to confirm whether or not the position of the center FPR_C of the film FPR and the position of the center LCD_C of the display panel LCD are properly aligned. That is, the first to m-th alignment marks AK1 to AKm are used not only for alignment between the display panel (LCD) and the pattern relief film (FPR) but also for inspection. For example, the aligned state judgment between the display panel (LCD) and the patterned retarder film (FPR) is made by checking the line of the polarized light separating portion (BL) located at the center FPR_C of the patterned retarder film Which will be described below.

The first to m-th alignment marks AK1 to AKm may be all the same color (for example, black) as shown in FIG. 7, or at least one of color, brightness and saturation may be different as shown in FIG. In the figure, the brightness (or saturation) of the fourth alignment mark AK4 is the highest, and the brightness gradually decreases (gradation) toward the upper and lower sides based on the brightness (or saturation). (Which may be the opposite or other form)

As shown in FIG. 8, when at least one of hue, brightness, and saturation is different, it is possible to increase the discrimination power for each of the alignment marks. Therefore, when the display panel (LCD) and the pattern relief film (FPR) are aligned and the alignment state is checked, the error probability can be lowered and the good product determination rate can be increased. The above structure is a method for increasing discrimination, and may be different from one or more of hue, brightness and saturation. However, in order to improve the accuracy of the alignment, it is preferable that the separation distances between the first to m-th alignment marks AK1 to AKm are the same. The alignment mark according to the first embodiment can be effectively applied to a structure in which the width of the bezel region is very narrow if the first to m-th alignment marks AK1 to AKm are arranged in the vertical direction.

As shown in Figs. 6, 9 and 10, the alignment mark is composed of a central alignment mark AK0 and peripheral alignment marks AK1 to AK4 having a region in which a central alignment mark is partially overlapped.

The peripheral alignment marks include a first alignment mark AK1, a second alignment mark AK2 located on the same horizontal line as the first alignment mark AK1, a second alignment mark AK2 located on the same vertical line as the second alignment mark AK2, The third alignment mark AK3 located on the same horizontal line as the third alignment mark AK3 and the fourth alignment mark AK3 located on the same vertical line as the first alignment mark AK1 AK4).

The width of the horizontal / vertical portion occupied per alignment mark may be formed to be ± 70 μm to ± 90 μm, and the separation distance between the peripheral alignment marks AK 1 to AK 4 may be formed to be ± 20 μm to ± 60 μm, It does not. For example, when the horizontal / vertical width per alignment mark is 80 占 퐉, it is preferable that the vertical and horizontal line-to-line distances between the first to fourth alignment marks AK1 to AK4 do not exceed 40 占 퐉.

In the drawing, an alignment mark composed of peripheral alignment marks AK1 to AK4 arranged so as to have a shape in which some regions overlap each corner of the central alignment mark AK0 is shown. However, the size of the superimposed area may vary depending on the shape of the central alignment mark AK0 and the peripheral alignment marks AK1 to AK4. Here, it is preferable that the center of the central alignment mark AK0 corresponds to the center (LCD_C) of the color filter substrate 120. [

On the other hand, the central alignment mark AK0 and the peripheral alignment marks AK1 to AK4 may all be the same color (for example, black) as shown in FIG. 9, or may differ in at least one of color, brightness, . In the figure, the brightness (or saturation) of the central alignment mark AK0 is low and the brightness of the peripheral alignment marks AK1 to AK4 is higher than the central alignment mark AK0. (Which may be the opposite or other form)

As shown in FIG. 10, when at least one of hue, brightness, and saturation is different, it is possible to increase the discrimination power of each of the alignment marks. Therefore, when the display panel (LCD) and the pattern relief film (FPR) are aligned and the alignment state is checked, the error probability can be lowered and the good product determination rate can be increased. The above structure is a method for increasing discrimination, and may be different from one or more of hue, brightness and saturation. However, in order to improve the accuracy of the alignment, it is desirable to form the same distance between the peripheral alignment marks AK1 to AK4. According to the second example, if the sizes of the peripheral alignment marks AK1 to AK4 are downsized, the alignment marks can be effectively applied to a structure having a narrow bezel area.

As shown in FIGS. 6, 11 and 12, the alignment mark is composed of two pairs of clustered alignment marks (AK1 to AK4), each of which has a rectangular shape when the separation distance is different and the center of all the alignment marks is the center.

A first alignment mark AK1 is formed on the perpendicularity. A second alignment mark AK2 is formed on the same vertical line as the first alignment mark AK1. A third alignment mark AK3 is formed on one side of the first alignment mark AK1 (e.g., below the right diagonal). A fourth alignment mark AK4 is formed on the other side of the second alignment mark AK2 (e.g., the upper left slash).

The two pairs of the collective alignment marks AK1 to AK4 are arranged in the spacing space between the first and second alignment marks AK1 and AK4 so that the third and fourth alignment marks AK3 and AK4 have a virtual And has an area tangent to draw a center line. Here, the imaginary center line corresponds to the center (LCD_C) of the color filter substrate 120.

The width of the horizontal / vertical portion occupied per alignment mark may be formed to be ± 70 μm to ± 90 μm, and the vertical line-to-line separation distance between the first and second alignment marks AK1 and AK2 is ± 20 μm to ± 60 μm And the vertical line-to-line distance between the third and fourth alignment marks AK3 and AK4 may be formed to be close to 0 to +/- 10 mu m, but is not limited thereto. For example, in the case where the width of the horizontal / vertical portion occupied per alignment mark is 80 占 퐉, the vertical separation distance between the first and second alignment marks AK1 and AK2 does not exceed 40 占 퐉 and the third and fourth alignment marks AK3, AK4) on the vertical line. Here, the separation distance between the first and second alignment marks AK1 and AK2 and the third and fourth alignment marks AK3 and AK4 is not limited, but is not too wide (approximately ± 20 μm to ± 40 μm ) Is preferable.

On the other hand, the two pairs of clustered alignment marks (AK1 to AK4) may be all the same color (for example, black color) as shown in FIG. 11 or may be different from one or more of color, brightness and saturation as shown in FIG. (Or saturation) of the third and fourth alignment marks AK3 and AK4 is high and the brightness of the first and second alignment marks AK1 and AK2 is higher than the third and fourth alignment marks AK3 , AK4) (which may be opposite or different)

As shown in FIG. 12, when at least one of hue, brightness, and saturation is different, it is possible to increase the discrimination power for each of the alignment marks. Therefore, when the display panel (LCD) and the pattern relief film (FPR) are aligned and the alignment state is checked, the error probability can be lowered and the good product determination rate can be increased. The above structure is a method for increasing discrimination, and may be different from one or more of hue, brightness and saturation. However, in order to improve the accuracy of the alignment, it is preferable that the separation distance between the third and fourth alignment marks AK3 and AK4 is close to 0 mu m.

On the other hand, in the examples shown in Figs. 7 to 12, the alignment mark constituting the alignment mark is formed in a square shape having rounded corners. However, the shape of the alignment marks is not limited to this, and may be formed of one of circular, square, and polygonal, or a combination thereof, as shown in Fig.

Hereinafter, a method for manufacturing a stereoscopic image display device according to the present invention will be described.

FIGS. 14 to 17 are views for explaining a method of manufacturing the stereoscopic image display device according to the present invention, and FIGS. 18 to 20 are views for explaining the alignment state inspection.

One of the organic light emitting element, the electrophoretic element, the plasma light emitting element, and the liquid crystal element may be used as the display panel used in the method of manufacturing the stereoscopic image display apparatus according to the present invention. However, As an example. Reference will now be made to FIGS. 1 to 13 together with the description to facilitate understanding of the description.

First, a transistor substrate 110, which is a transistor array substrate, and a color filter substrate 120, which is a color filter substrate, are bonded together to form a display panel (LCD). At this time, the display panel (LCD) is an example of a liquid crystal display panel composed of a liquid crystal element.

Next, a pattern relief film (FPR) to be attached to the display panel (LCD) is formed.

Next, a black stripe 130 is formed on the display area of the color filter substrate 120 of the display panel (LCD), and an alignment mark AK is formed on the non-display area of the color filter substrate 120 of the display panel . At this time, the black stripes 130 and the alignment marks AK are formed by a printing method. On the other hand, the black stripe 130 and the alignment mark AK may be formed before the transistor substrate 110 and the color filter substrate 120 are bonded together or before the pattern relief film (FPR) is formed.

Next, attach the display panel (LCD) and the patterned retarder film (FPR). The display panel (LCD) and pattern relief film (FPR) can be attached by various process methods. In the present invention, as shown in FIGS. 14 to 19, an example using a system composed of the alignment stages ST1 and ST2, the vision cameras VR1 to VR5, VP1 to VP4, the drum DR and the controller CTRL is used.

First, the first aligning stage ST1 picks up the patterned retarder film FPR and, under the control of the controller CTRL interlocked with the first vision cameras VR1 to VR5, moves the x-axis, the y-axis and the? So as to correct an error with respect to the position of the pattern relief film FPR (Fig. 14). At this time, the first vision cameras VR1 to VR5 pick up a dummy pattern (a dummy pattern for alignment) formed on the edge of the patterned retarder film FPR fixed on the first alignment stage ST1, To the controller (CTRL). The first vision cameras VR1 to VR5 may be arranged to pick up images at the upper two positions, the lower two positions and the center position of the patterned retarder film FPR, but are not limited thereto. By this process, the upper, middle and lower ends of the patterned retarder film (FPR) coincide with virtual reference lines set in the controller (CTRL).

Next, when the virtual reference line set in the center of the patterned retarder film (FPR) matches the virtual reference line set in the controller (CTRL), the drum (DR) rotates counterclockwise and sucks the patterned retarder film (FPR) 15). At this time, the protective film of the patterned retarder film (FPR) is removed and the adhesive layer 147 is exposed.

Next, the second alignment stage ST2 performs fine adjustment in the x-axis, y-axis, and the? -Axis direction under the control of the controller CTRL that adsorbs the display panel LCD and interlocks with the second vision cameras VP1- Thereby correcting the error with respect to the position of the display panel (LCD) (Fig. 16). At this time, the second vision cameras VP1 to VP4 pick up the alignment mark AK formed on the edge of the display panel (LCD) fixed on the second alignment stage ST2 and transmit the obtained image to the controller CTRL send. The second vision cameras VP1 to VP4 may be arranged to pick up images of the upper two positions and the lower two positions of the display panel (LCD), but are not limited thereto. By this process, the upper and lower ends of the display panel LCD are matched with virtual reference lines set in the controller CTRL.

Next, the drum DR is moved to the second aligning stage ST2 in a state of adsorbing the patterned retarder film FPR, and rotated in the counterclockwise direction to display the patterned retarder film FPR And attached to the color filter substrate 120 of the panel (LCD) (Fig. 17).

Next, the alignment state between the display panel (LCD) and the pattern relief film (FPR) is checked using the alignment mark AK (Figs. 18 and 19). In the process of checking the alignment state, the second vision cameras VP1 to VP4 can be used. However, in the embodiment, an alignment state check of the attached pattern relief film (FPR) and the display panel (LCD) is performed using a separate third vision camera (V1, V2) as an example.

The third vision cameras V1 and V2 are arranged to pick up images of the patterned retarder film FPR and two images of the center C of the display panel LCD. A central alignment mark (AKC) formed on the color filter substrate 120 of the display panel (LCD) exists at two locations (L1 and L2) at the center (C) of the patterned retarder film (FPR) and the display panel .

As a result of photographing the two portions C and L of the patterned retarder film FPR and the center C of the display panel LCD as shown in FIG. 20A, the polarized light of the patterned retarder film FPR It is determined that the alignment state is good when the portion BL passes the center of the central alignment mark AK0 and the spacing spaces of the peripheral alignment marks AK1 to AK4 do not overlap each other. Alternatively, when the polarized light separating portion BL of the pattern relief film FPR is displaced from the center of the central alignment mark AK0 as shown in FIG. 20 (b), the peripheral alignment marks AK1 to AK4 If it overlaps with a part of the spacing space, it is judged that the alignment state is poor. At this time, the criterion for determining whether or not the mark is in the aligned state can be set according to the width of the vertical spacing space of the peripheral alignment marks AK1 to AK4. However, when the alignment mark according to the present invention is used, It is possible to check the adhesion state of the retarder film (FPR).

As described above, the present invention provides a stereoscopic image display device and a method of manufacturing the same that can increase the luminance and the aperture ratio. In addition, the present invention can form a black stripe and an alignment mark on the outside of a color filter substrate constituting a display panel by a printing method to exhibit the same inspection capability and the same level as a photolithography method, There is provided an effect of providing a stereoscopic image display device and a method of manufacturing the stereoscopic image display device capable of easily determining an alignment state as well as an alignment state.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood that the invention may be practiced. It is therefore to be understood that the embodiments described above are to be considered in all respects only as illustrative and not restrictive. In addition, the scope of the present invention is indicated by the following claims rather than the detailed description. Also, all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

LCD: Display Panel FPR: Pattern Drift Film
AK: Alliance 130: Black Stripe
147: adhesive layer 145: retarder layer
140: Protective film ST1, ST2: Aligning stage
DR: Drum CTRL: Controller

Claims (12)

Display panel;
A pattern relief film attached to the color filter substrate of the display panel;
A black stripe formed in a display region of the color filter substrate of the display panel; And
And an alignment mark formed on a non-display area of the color filter substrate of the display panel and having a plurality of alignment marks,
Wherein the plurality of alignment marks are sequentially arranged along a first direction such that at least one of the plurality of alignment marks is overlapped with a remaining portion of at least one of the plurality of alignment marks. Display panel;
A pattern relief film attached to the color filter substrate of the display panel;
A black stripe formed in a display region of the color filter substrate of the display panel; And
And an alignment mark formed on a non-display area of the color filter substrate of the display panel and having a plurality of alignment marks,
Wherein the plurality of alignment marks include a central alignment mark positioned at the center and a peripheral alignment mark having an area partially overlapping the central alignment mark,
Wherein the peripheral alignment marks include a first alignment mark, a second alignment mark spaced apart on the same horizontal line as the first alignment mark, a third alignment mark spaced apart on the same vertical line as the second alignment mark, And a fourth alignment mark positioned on the same horizontal line as the third alignment mark and spaced apart on the same vertical line as the first alignment mark. delete delete delete 3. The method according to claim 1 or 2,
The above-
Wherein the display device is formed of one of a circle, a rectangle, and a polygon, or a combination thereof. 3. The method according to claim 1 or 2,
The above-
Wherein at least one of color, lightness, and saturation is different. delete delete delete The method according to claim 1,
The first direction
And a diagonal direction. delete

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